import { FC, useMemo } from 'react';
import { LocalizeText, NotificationAlertItem, NotificationAlertType, OpenUrl } from '../../../../api';
import { Button, Column, Flex, LayoutAvatarImageView, LayoutNotificationAlertView, LayoutNotificationAlertViewProps, Text } from '../../../../common';

const INFO_AVATAR_FIGURE = 'hr-831-61.hd-180-2.lg-270-100.sh-290-110.ha-3129-100.fa-1205-63.cc-3039-100';

interface NitroInfoAlertViewProps extends LayoutNotificationAlertViewProps
{
    item: NotificationAlertItem;
}

const REPORT_ISSUES_URL = 'https://github.com/duckietm/Nitro-V3/issues';

type InfoSection = { title: string; lines: string[]; kind: 'hotel' | 'server' | 'credits' | 'generic' };

const detectKind = (title: string): InfoSection['kind'] =>
{
    const t = title.toLowerCase();
    if(t.includes('hotel')) return 'hotel';
    if(t.includes('server')) return 'server';
    if(t.includes('credit')) return 'credits';
    return 'generic';
};

const parseInfoSections = (text: string): { version: string; sections: InfoSection[] } =>
{
    const version = (text.match(/<b>([^<]+)<\/b>/) || [ '', '' ])[1];

    const stripped = text
        .replace(/^<b>[^<]+<\/b>\r?\n?/, '')
        .replace(/Report issues at:[^]*$/, '');

    const sections: InfoSection[] = [];
    const blocks = stripped.split(/\r?\n+/);

    for(const block of blocks)
    {
        if(!block.trim()) continue;

        const headerMatch = block.match(/<b>([^<]+)<\/b>/);
        if(!headerMatch) continue;

        const title = headerMatch[1];
        const rest = block.substring(block.indexOf('</b>') + 4);
        const lines = rest.split(/\r/).map(l => l.trim().replace(/^-\s*/, '')).filter(Boolean);

        sections.push({ title, lines, kind: detectKind(title) });
    }

    return { version, sections };
};

const sectionIcon: Record<InfoSection['kind'], string> = {
    hotel: '🏨',
    server: '🖥️',
    credits: '⭐',
    generic: 'ℹ️'
};

const splitLabel = (line: string): { label: string; value: string } =>
{
    const idx = line.indexOf(':');
    if(idx === -1) return { label: '', value: line };
    return { label: line.substring(0, idx).trim(), value: line.substring(idx + 1).trim() };
};

export const NitroInfoAlertView: FC<NitroInfoAlertViewProps> = props =>
{
    const { item = null, title: titleProp = null, onClose = null, ...rest } = props;

    const { version, sections } = useMemo(() =>
    {
        const text = (item && item.messages && item.messages[0]) || '';
        return parseInfoSections(text);
    }, [ item ]);

    const rawTitle = titleProp || (item && item.title) || '';
    const displayTitle = (rawTitle && rawTitle !== 'nitro.info.title') ? rawTitle : 'Hotel Info';

    return (
        <LayoutNotificationAlertView
            title={ displayTitle }
            onClose={ onClose }
            { ...rest }
            type={ NotificationAlertType.NITRO_INFO }>
            <div className="nitro-info-hero">
                <div className="nitro-info-hero-stars" />
                { version &&
                    <div className="nitro-info-version-badge">
                        <span className="nitro-info-version-spark">✦</span>
                        <span className="nitro-info-version-text">{ version }</span>
                        <span className="nitro-info-version-spark">✦</span>
                    </div> }
            </div>
            <Flex fullHeight gap={ 2 } overflow="hidden" className="nitro-info-content">
                <div className="nitro-info-avatar-wrap shrink-0">
                    <LayoutAvatarImageView
                        figure={ INFO_AVATAR_FIGURE }
                        direction={ 2 }
                        classNames={ [ 'nitro-info-avatar' ] } />
                    <div className="nitro-info-avatar-shadow" />
                </div>
                <Column fullWidth gap={ 2 } overflow="auto" className="nitro-info-body">
                    { sections.map((section, index) => (
                        <div key={ index } className={ `nitro-info-section nitro-info-section-${ section.kind }` }>
                            <div className="nitro-info-section-header">
                                <span className="nitro-info-section-icon">{ sectionIcon[section.kind] }</span>
                                <span className="nitro-info-section-title">{ section.title }</span>
                            </div>
                            <div className="nitro-info-section-body">
                                { section.kind === 'credits'
                                    ? (
                                        <ul className="nitro-info-credits-list">
                                            { section.lines.map((line, i) => (
                                                <li key={ i }>
                                                    <span className="nitro-info-credit-star">★</span>
                                                    <span>{ line }</span>
                                                </li>
                                            )) }
                                        </ul>
                                    )
                                    : (
                                        <ul className="nitro-info-stats-list">
                                            { section.lines.map((line, i) =>
                                            {
                                                const { label, value } = splitLabel(line);
                                                return (
                                                    <li key={ i }>
                                                        { label && <span className="nitro-info-stat-label">{ label }</span> }
                                                        <span className="nitro-info-stat-value">{ value }</span>
                                                    </li>
                                                );
                                            }) }
                                        </ul>
                                    ) }
                            </div>
                        </div>
                    )) }
                    <div className="nitro-info-footer">
                        <Text center small italics>Found a bug? Help us improve!</Text>
                        <Flex gap={ 1 } fullWidth className="nitro-info-actions">
                            <Button fullWidth variant="success" className="nitro-info-report-btn" onClick={ () => OpenUrl(REPORT_ISSUES_URL) }>
                                <span>🐞 Report Issues</span>
                            </Button>
                            <Button fullWidth onClick={ onClose }>
                                { LocalizeText('generic.close') }
                            </Button>
                        </Flex>
                    </div>
                </Column>
            </Flex>
        </LayoutNotificationAlertView>
    );
};